When I got my E-M5, I got a Wasabi charger and 4 non-OEM BLN-1 batteries with it. One of the batteries was a very tight fit (I got it stuck in the camera) and so couldn't be used but I figured for the price I still had 3 good batteries. 4 months later, a second one of the batteries stopped fitting, and now a third one is having that problem. It seems that the batteries have swollen (slightly) and while they will still go into the camera, they're too tight for the spring to push out. Has anybody else experienced this? Any particular solutions? They're not expensive batteries, but it's a bit wasteful going through 3 batteries in a year.